Nut-lock.



PATENTED AUG. 21, 1906.

A. A. JONES.

NUT LOCK.

nruouxou FILED AUG 9. 1904.

AIiVEY A. JONES, OF TURTLE CREEK, PENNSYLVANIA.

NUT-LOCK.

Specification of Letters Patent.

Patented Aug. 21, 1906.

Application filed August 9,1904. Serial No. 220,098.

To alZ whom, it may concern.-

Be it known that I, ALvEY A. JoNEs, a citizen of the United States of America, residing at Turtle Creek, in the county of Allegheny and State of Pennsylvania, have invented certain new and useful Improvements in Nut- Locks, of which the following is a specification, reference being had therein to the accompanying drawings.

This invention has relation to certain new and useful im rovements in nut-locks; and the invention as for its object the provision of novel means whereby when a nut has been once placed upon a belt or screw-threaded shank portion the same will be retained thereon until removed.

The invention has for another one of its objects the provision of means in connection with the nut whereby when the same has been placed upon a bolt it will engage said bolt and be prevented from becoming loose or disengaged from said bolt, and I employ a novel form of bolt to accomplish this result.

The invention contemplates the use of a bolt having one or more grooves formed therein, and in the nut I provide springpressed awls which are ada ted to engage within t e grooves of the be t and prevent the nut from rotating.

The above construction will be hereinafter more fully described in detail and then s ecifically pointed out in the claims, and, re erring to the drawings accompanying this application, like numerals of re erence designate corresponding parts throughout the several views, in which Figure 1. is a side elevation of my improved nut-lock, showing the same mounted upon a bolt. Fig. 2 is a front view of the same. Fig. 3 is a front view of one member of the nut, the other member being removed to show the spring-pressed lockingpawls. Fig. 4 is a front view of one of the members of the nut, showing the same disengaged from the member illustrated in Fig. 3 of the drawings. Fig. 5 is a longitudinal sectional view of my improved nutlock. Fig. 6 is a longitudinal sectional view of a modified form of in T improved nut-lock, and Fig. 7 is a detai perspective view of one of the lockingpawls.

To ut my invention into ractice, I employ t e ordinary form of b0 t 1., which carries a head 2 and has its shank portion screwthreaded, as indicated at 3. In Figs. 1 to 3, inclusive, 1 have illustrated the bolt as being secured in a pece of material 1. The bolt is provided longitudinally of its length with two grooves 5 and 6, these grooves being formed diametrically opposite each other. The locking mechanism of my improved nu tlock is constructed in the nut, which comprises two members 7 and 8. The nut, as illustrated in the accompanying drawings, is hexagon in form, although the same may be square or octagon in form, and each mem ber of the nut is provided with an ordinary screw-threaded aperture 9 and 10, this aperture being of the same diameter as the bolt 1.

In the face of the member 7 I form two recesses 11 11, these recesses being (.liametrically opposite each other, and in each recess is mounted a pin 12 and a pawl 14, which is provided with a shoulder 15, that is adapted to engage in the grooves 5 and 6. Mounted in the recesses 11 11 are flat springs 16 16, which are adapted to bear against the rear face 17 of each pawl 1/1. The member 8 of the nut is provided with recesses 18 18, formed diametrically opposite each other, and these recesses when the member 8 is placed in engagement with the member 7 co incide with the recesses 11 11 of the member 7, as clearly illustrated in Fig. 5 of the drawings. The recesses 11 11 and 18 18 are ada ted to surround the pawls 14 14', each paw being supported between said recesses. The springs 16 16 are adapted to normally hold the shoulder 15 of each pawl in the grooves 5 and 6, as shown in Fig. 3 of the drawings, and the manner of securing the nut u on the bolt is as follows: The member 8 is p aced in engagement with the member 7, these two members assuming the position shown in Fig. 5 of the drawings, at which time the nut in its entirety may be placed upon the bolt by rotating the same until it has engaged the material through which the bolt passes. At each rotation of the nut the pawls 14 14 will travel over the grooves 5 and 6, and the threads 3 of the bolt and the nut will be prevented from a rearward movement by the shoulder 15 of each pawl enga ing in the grooves. It will be impossible "or the member 8 to become disengaged from the member 7, owing to the fact that the member 8 is provided with a screw-threaded aperture, and when it has been once rotated in conjunction with the member 7 upon the bolt the locking-pawls 14 14, which partly protrude into the recesses 18 18 of thcinemtoo IIO

her 8, and the pawls prevent the member 8 from. becoming disengaged from the bolt or the member 7.

In Fig. 6 of the drawings 1 have illustrated a modified form of constructing my improved nu t-lock, and in this form the nut may be removed from the belt at any time it may be desired to release the same from on agement with the bolt. In this form I emp oy a bolt constructed similar to the bolt of my preferable form previously described, and the members 7 and 8 are similarly constructed, with the exception that the member 8 is formed with a recess of a suflicient depth to receive the locking-pawls 14 14, and these lockingpawls are mounted in the member 8 by pins 19 19, which besides supporting the lockingpawls within their respective recesses secure the member 7 to the memberS, and the member 7 is provided with a smooth bore 20, as shown in Fi 6 of the drawings. The nut of my modified form comprises, as heretofore stated, the members 7 and 8, and these members are held in engagement with each other by the pins 19 19, which pass through said members. To place the nut upon a bolt, the same is rotated the desired distance, at which time the pawls will engage in the grooves of the bolt, and should it be desired to remove the nut at any time from said bolt the pins 19 19 are withdrawn, whereb T the member 7 may be removed from the bol t by sliding the same therefrom and the springs which bear against the pawls of the nut raised to permit the pawls to become disengaged from the grooves as the nut is reversely rotated to re move the same from the bolt.

It will be observed from the construction employed in connection with my improved nut-lock that the same may be readily used upon a screw-threaded shank or rod upon which it is desired to look a nut, and I may employ any number of locking-pawls, the same depending on the size of the bolt and nut.

It will be noted that various changes may be made in the arran ement of the )awls, the size of the same, anr other such changes as will be permissible by the appended claims.

\Vhat I claim, and desire to secure by Lettcrs Patent, is

1. In a nut-lock, the combination with a longitudinallyrrooved belt of a nut composed of two ha f-sections of equal size and of the same contour, connected so as to rotate together, one of said half-sections having recesses in its abutting face, and pivoted springpressed pawls mounted in such recesses and engaging the grooves in the bolt.

2. In a nut-lock, a longitudinally-grooved bolt, combined with a nut embodying two equal sections or members mounted on the bolt and rotatable in unison thereon, the inner of said members having oppositely-disposed recesses in its outer face, spring-pressed pawls mounted in the said recesses and provided with shoulders to take into the grooves of the bolt, and pins fastening the two sections or members of the nut together and passing through the pawls and serving as pivots for the same, substantially as described.

In testimony whereof I aflix my signature in the presence of two witnesses.

ALVEY A. JONES.

itnesses C. KLOSTERMANN, K. H. BUTLER. 

